Adjusting device for drills



UNITED STATES.

WILLIAM JOHN MEWER, OF OLD ORCHARD, MAINE, ASSIGNOR TO JOHN W.

DUFF AND WILLIAM J. C. MILLIKEN, BENNETT, OF PORTLAND, MAINE.

PATENT Ormea.

ADJUSTING DEVICE FOR DRILLS, &G.

SPECIFICATION forming part of Letters Eatent No. 529,039, dated November13,1 894. Application filed December 11, 189,3.v Serial No. 493,412. (Nomodel.)

siding at Old Orchard, in the county of York and State of Maine, haveinvented certain new and useful Improvements in Adjusting De-Y vicesforDrills, dac., of which the following is a specification. f

This invention relates to certain new and zo useful improvements inadjusting devices; and it consists substantially in such features ofconstruction, arrangement, and combinations of parts as will hereinafterbe more particularly described.

The object of the invention is to provide an improved follower ortake-up device for eect ing the adjustments of -various mechanicalappliances or devices, such as drills, pistonrod packings,driving-connections, and the zo like, as will more fully appear whentaken in connection with the accompanying drawings,

in wh-ich- Figure 1, is a view in perspective of my improved adjustingdevice, the parts being shown as set outwardly to the full length orcapacity yfor inward adjustment. Fig. 2, is a similar view, showing theparts as closed up to the full limit of inward adjustment, such positionalso indicating the positions of the 3o partswhensetforoutwardadjustments. Fig. 3, is a vertical sectional view ofmyimproved adjusting devices, and showing in elevation the attachmentsor connections employed when my improvements are applied or used 3 5 inconnection with a hand-drill, the position and arrangement of the drillbeing indicated in dotted lines. Fig. 4, is a detail view, showing thepreferred construction of the upper end o f one of the parts of myimproved device. It will be understood-,that my invention is adapted toagreat many different devices or appliances in which parallel adjustmentsare to be eected, and in order that the application thereof may bebetter understood, I have constituted my improvement as a support orattachment for an ordinary hand or breastdrill, by which the latter isrendered capable of use in boring or drilling holes in various permanentmetallic structures, without re- 5o moving the latter, either in partVor entirety.

The advantages to be derived from such an arrangement will not beenumerated here, and no more mention made of such a contrivance than isabsolutely necessary herein to enable a clear understanding tobe had ofthe lpurposes of my invention. In carrying my invention into effect, Iconstruct the same of two counterpart sections, and an adjusting sleeve,each of said sections being received by orl working in the other, insuch manner as to increase or shorten the length accordingly as theadjusting sleeve be turned or operated in one direction or the other.

While I have herein shown a preferred embodiment of theinvention, itwill be apparent OE vSAME PLACE, AND HENRY B- that immaterial changestherein could be made without departing from the general spirit or scopeintended. For instance, I have herein represented as a preferred form,the two principal parts of my invention as being provided with recessesin diametrically opposite sides, and the intervening portions of each'part 'coinciding with and-being received by the recesses ofthe other,accordingly as the operating sleeve is turned. It is evident that thenumber of recesses and intervening portions could be increased withequal eect.

The extreme or o uter ends of the device when the parts thereof areiuplace or position, may be provided with suitable connecting portions, soas to enable the device to connect together the ends of parts which areto be adjusted with relation to each other, as for instance betweenopposite ends of two rods, or the like. For such purpose, therefore, anyform of connecting devices may be employed. Y

When my'device isemployed forthe purpose herein selected, for example, Ipreferably provide one end of one part with abearing-point, and thecorresponding end of the other part is likewise altered so as to hold orsupport certain devices used to attach my improvement to a pipe or otherstructure, as will hereinafter be explained. l

Reference being had to the drawings, 1, represents my improved adjustingdevice as a whole or entirety. p

2, indicates the part or section which for the sake of clearness, I willcall the stationary part; while 3, represents the movable or adjustablepart or section. As will be observed, the two parts are cylindric, andare complementary to each other, that is to say, each part or section isin part received by the "other; and, as shown, this is accomplished bytaking two shells or short cylinders and forming or providing the samewith continuous screw-threads, a and l), respectively, preferably ontheir exterior surfaces. At diametrically opposite sides each part orsection has a portion of its body cut out to constitute in the part 2,the recesses et, 4, and in the other part the corresponding recesses5,5.

As shown iu Fig. 1, the two parts or sections 2, and 3, are shown in theoutermost positions with respect to each other; and it will be observedalso by this gure, as well as the others, that the screw-threads of thetwo parts trend or lie in different directions, that is to say, thethread of the part or section 2, is a right-hand thread, while that ofthe part or section 3, is a left-hand thread. Some such arrangement isnecessary so as to cause one part to be adjusted in or out with respectto the other part whenever the operating sleeve is properly turned.

It will, of course, be understood that by simply reversing thedirections of the threads, the same effect would be had, it being onlynecessary in such case to reverse the relative positions of the partsshown in Figs. 2 and 3, in order to obtain the same direction of adjustment.

7, represents a rotary sleeve or collar surrounding the two parts, andpreferably, though not essentially, consisting of two separatering-shaped portions 8 and 9, joined together or united by connectingportions 11. The said portion 8, is provided interiorly with aright-hand screw-thread c, adapting the sleeve to the part or section 2;and the said portion 9, is in like manner provided with an interiorleft-hand thread d, to adapt the same to the part or section 3. It isevident from this construction and arrangement that by turning thesleeve upon the part 2, the part 3, will be caused to follow the sleeve,and by turning the sleeve backward, the reverse will be the effect. Asthe two parts are moved in and out, the solid portions of each part arereceived into the recesses or cut-out portions of the other, in anevident manuel'. It will thus be seen that adjustments can be veryeasily and quickly effected to a nicety, and that in many instances thewear aud thrust of various mechanical elements and appliances canreadily be compensated for.

As an example of one of the uses to which my improvements are adapted, Ihave herein shown a support which when properly embodied and fastened toany structure, such for instance, as a pipe or other metallic structure,an ordinary hand or breast-drill may be employed for boring or drillingholes without the necessity of constantly building up a backingorbearing for the drill, as by the insertion of blocks and the like,frequently practiced in many instances of the ordinary hand-ratchetdrill.

Fig. 3, fully illustrates the application in question, and wherein itwill be seen that the outer end of the part or section 3, is formed orprovided with an arch 16, having a bearing-point 17, designed to restupon the upper end of the drill or stock, so as to hold the drill to itswork. In this instance also the outer end of the part 2, is preferablyfianged at 18; and around this part or section is placed a loose collaror yoke 19, formed or provided with interiorly threaded hollow bearings20,

20, through which pass the screw-rods 21, 21,

as shown.

Carried upon the rods 2l, is agrip 22, which is formed or provided withjaws 23, which rest upon or against the pipe or other structure beingoperated upon, and take into the material or body thereof sufficientlyto establish a firm and secure hold. The said jaw is held down in placeagainst the collars 24, ofthe screw-rods by means of the nuts 25, asshown, and the said rods may or may not be formed or provided withmilled collars 27, to enable the rods to be readily turned by the handof the operator.

The grip 22, is formed or provided at one end with projecting lugs 28,to which one end of a chain, rope, or similar tightening means 29,isattached, while the opposite end thereof is slotted or cut at 30, so asto receive and bind the chain or rope tightly after the latter has beenplaced around the part or structure to be drilled.

Between the flange 18, of the part or section 2, and the loose collar oryoke 19, I place friction washers 31, 32, of any preferred material, soas to receive all wear and friction, and in a large measure render theparts noiseless in operation. Instead of these washers I may, ifdesired, use a ball-and-socket friction device, such as is used for manypurposes in various contrivances or mechanical devices.

The purpose of the screw-rods is to enable drills of ditferent lengthsor heights to be employed, for it is evident that were it necessary tohave to use a brace or drill which would be too high or long to bereceived even when the parts 2 and 3, were adjusted outwardly as far aspossible, then it is simply necessary to adjust the rods outward byscrewing or turning them in the proper direction.

It will be observed that the arch 16, is so attached or secured to thepart 2, by screws, as to be capable of being turned down alongside ofsuch part, in order to facilitate the entrance of a drill and its stockwhen necessary.

Without limiting myself to the precise construction and arrangements ofparts shown, I claim- 1. In adjusting devices of the character referredto, two complementary hollow sections IOO IIO

IZO

provided with corresponding recesses and eX-l tensions, each fitting andworking within the other-and screw-threaded on their exterior surfaces,means for operating said sections, means at one end of the sections forattachment to the object to b`e drilled, and a bearingpoint formed withor attached to the opposite end of the sections, substantially asdescribed.

2. In adjusting devices of the character referred to, two complementaryhollow sections provided with corresponding recesses and extensions eachfitting and working within the other and screw-threaded on theirexterior surfaces, means for operating said sections to lengthen orshorten the same, a gripping jaw attached to one section, and abearing-point attached to the other, substantially as described.

3'. In adjusting devices of the character referred to, two complementaryhollow sections provided with corresponding recesses and eX- tensionseach fitting and working Within the other, and screw-threaded on theirexterior surfaces, a correspondingly screw-threaded sleeve for operatingsaid complementary sections, a gripping jaw, means for adjusting thejaw, and a loose collar, substantially as described.

4. In adjusting devices of the character referred to, two complementaryhollow sections provided with corresponding recesses or extensions, eachfitting and working within the other and screw-threaded on theirexterior surfaces in opposite directions to each other, a correspondinginteriorly screwthreaded sleeve surrounding the sections for operatingthe same, the loose collar provided with bearings, the screw-rodsworking in said bearings,

anti-friction devices, and an adjustable gripping jaw, substantially asdescribed.

5. In adjusting devices of the character referred to, the combinationofthe complementary sections, and their operating sleeve, a grippingjaw, means for adjusting the jaw, and a loose collar, substantially asdescribed.

6. In adj usting devices of the character referred to, the combinationof the complementary sections, the arch and bearing-point, the operatingsleeve, a loose collar, and an adjustable gripping jaw, substantially asdescribed.

7. In adj usting devices of the character referred to, the combinationof the complementary sections, the adjusting sleeve, the loose collarprovided with screw-threaded bearings, the screw-rods working in saidbearings, anti-friction devices, and a grip jaw and jamnuts,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM JOHN MEWER.

Witnesses:

H. FAIRFIELD, LUTHER R. MOORE.

